fix: add missing switch cases and update compiler check

[juliansteenbakker]

Fixes warning during build about switch case not being exhaustive

[tp]

@juliansteenbakker Thanks, I'll look into this and see what we can do.

Could you please rebase this onto master so we get a working CI (sorry, that was just merged from our end). Then we can also ensure that all supported/checked Xcode versions are properly working.

[juliansteenbakker]

I have applied your improvements @tp. I hope we can get this merged soon 😄

[tp]

I have applied your improvements @tp. I hope we can get this merged soon 😄

Thanks @juliansteenbakker. I'll take another look :)